It’s just a walk in the park It’s Just a walk in the park

1 Feedback so far…

  • Add blank lines to break up chunks of code to make it easier to read

  • Increase code efficiency by merging multiple variables into one vector

  • When pulling data to be analysed, pull from public github so is easy for others to rerun scripts (use link)

2 Table of useful functions

Code Meaning
+ Add
- Subtract
/ Divide
* Multiply
^ Power
Inf Infinite
NaN Not A Number
NA Not Available
c() Combine multiple variables into one vector
[x] Pull out specific value from vector
"" Create character vectors
as.factor(x) Converts variable names into factors
== Equal to
!= Not equal to
< Less than
> More than
<= Less than or equal to
>= More than or equal to
| Or
%in% Within
& To combine multiple logical operators
$ To quick access data (our_data$Day) OR add column to data (our_data$location <- "United Kingdom")
%>% Applies functions to data (my_data %>% function_1() %>% function_2())

3 Writing functions

Allows specifying multiple arguments within one custom made function if placed within {} brackets

mm <- function(x){
  ##sort vector from smallest to largest
  ##retrieve first and last value in vector
  MINMAX <- sort(x)[c(1,length(x))]
  ##add `return()` to give wanted value 
  return(MINMAX)
}

4 RMarkdown

4.1 Gifs/Images

To insert images you must have the image saved in same folder as RMarkdown file

<center> ![A caption for the image](the image name.gif) </center>

<center> before centers the image/object and </center> after stops that